After ensuring that the Lcd screen module is okay or already tried installing a new replacement and then also ensuring that the device firmware is successfully flash or restored,
you may check and or replace the component showed on the solution below.

iPhone 5s Blue Screen Problem Repair Solution

iPhone 5s Blue, Blank and White Display Problem Solution

If ever encountered this kind of problem you may first try to update or restore the device firmware first, and then try to install a new replacement LCD screen module.
If all of the above already been done but still the problem still exists, you may then used tjis solution below for hardware troubleshooting procedure on Nokia Lumia 1320 PCB board.

Please Note that we will edit these solutions or add new ones if found in this page at any time in the future. So feel free to come back any time on this page to stay up to date.

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Note: Every repairing solution posted here is tested by at least one member of our team. Use the information available here at Your Own Risk. We are not responsible if any harm comes to your device during the repairing process.